Telephone system.



' No. 866,138. PATENTED SEPT. 17, 1907.

H. P. JOEGKEL. TELEPHONE SYSTEM.

APPLIOATIOR FILED T11R23, 1904. RENEWED EAR. 11, 1907.

1H: mamas PETERS cm, WASHINGION, o. c

HENRY F. JOEOKEL, OF CLAYTON, ILLINOIS.

TELEPHONE SYSTEM.

Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed February 23, 1904, Serial No. 194,948. Renewed March 11, 1907. Serial No. 361,333.

To all whom it may concern:

Be it known that I, HENRY F. JonoKEL, a citizen of the UnitedStates, residing at Clayton, in the county of Adams and State of Illinois, have invented an Improvement in Telephone Systems-the installation of telephone sets to a two-circuit-line system and the two-circuit wiring of telephonesof which the following is a specification.

This invention relates to telephone systems having several telephones on one line.

The object of this invention is to improve the bridging and series telephone systems which signal and talk over one line circuit. I accomplish this by separating the circuits of the signaling and talking instruments from one another thereby avoiding that the signaling and talking instruments interfere with the operation of one another.

The several features of novelty of the invention will be hereinafter more fully described, shdwn in the accompanying drawings and definitely indicated in the claims appended to this specification.

In the accompanying drawings, which illustrate the improvement Figu e 1 is a diagram of a bridging te1ephone-set connected to two line wires and the ground although another line wire can be used instead of the ground so that the signaling and talking instruments have separate line circuits. Fig. 2 is a diagram of a series telephone set connected to three line wires so that the signaling and talking instruments have separate line circuits. Fig. 3 is a diagram of a bridging telephone wired to separate the signaling circuit from the talking circuit connected to two line wires and the ground although another line wire may be used instead of the ground.

Referring first to Fig. 1 this diagram shows but one station but it is to be understood that there are several connected by conductors No. 1, 2 and the ground, a bridging magneto bell 3 is bridged between line conductor No. 1 and ground by its binding posts A and B, the bridging talking instruments 4 are bridged between line conductor No. 2 and the ground by its binding posts 0 and D but may be connected between conductors No. 2 and No. 1 by connecting binding post D to conductor No. 1 instead of connecting it to the ground, the only change made with this bridging telephone set is the connection of binding posts A of v the signaling instrument and C of the talking instruments to two different line conductors No. 1 and No. 2 while binding posts B of the signaling instruments and D of the talking instruments are both connected to the ground it will be seen that the signaling instruments bridged between No. 1 and the ground cannot interfere with the talking instruments bridged between No. 2 and the ground and vice-versa, thus it is not necessary to hang up the receiver in order-to make signaling possible as one must do in the present bridging system, and if every receiver on the line was from their switch hooks it could not interfere with the signaling on that line. The talking instruments like in bridging systems are normally disconnected and as they have a line circuit of their own the talking current is not weakened by crossing the circuit in a lot of ringing coils as is the case in the usual bridging party system.

In Fig. 2 I have shown a diagram showing but one station but it is to be understood that there are several connected by conductors No. 1, 2 and 5, a series magneto bell 9 is connected in line conductor No. 1 by its binding posts A and B in the usual order and manner customary in series systems, conductor No. 5 complet ing the circuit, the series talking instruments 4 which are usually the same as the talking instruments of bridging telephones are bridged between line conductors No. 2 and No. 5 by its binding posts 0 and D respectively, this combination is obtained by the manner in which the binding posts are connected to the three conductors, practically the same results are obtained in this as in Fig. 1 inasmuch as the signaling and talking instruments operate independent of one another and as the talking instruments are alike and connected alike operate alike and are alike effective being thus much more effective than in the present series party system.

In Fig. 3 I have shown a diagram showing parts and their wiring and their position in the usual bridging telephone with the change made to separate the signaling circuit from the talking circuit and their connec tion to two line circuits but one station is shown but it is to be understood that there are several connected by conductors No. l, 2 and the ground, the magnets and bell are bridged between line conductor N0. 1 and the ground by binding posts B and A respectively, the

talking instruments are bridged between line conductor No. 2 and the ground by binding posts 0 and A, it will be seen that binding post A is common to both B and G and that if A was connected to conductor N o; l and B to the ground that the conductor No. 1 would be used in common by both the signaling and talking instruments and thereby have a metallic talking circuit over line conductors No. 1 and 2 and a ground signaling circuit over No. l and the ground instead of both circuits being ground circuits, as may be seen from the diagram. In this telephone the talking wire 10 is separated from the signaling wire 11 at 12 and separate binding posts 13 and O are provided this is the only change made in the wiring of the telephone and therefore it can still be used on the present bridging system by connecting binding posts B and 0 together to one line conductor thereby again uniting the aforesaid separated wires 10 and 11. This telephone being one which cuts out its bell when receiver is from its hook differs in this from Fig. 1, thus if all receivers except one are from their hooks all bells except one will be cut out and as the magnetos connect independently when operated every magneto operated would only have the one bell to ring and therefore ring it much stronger than would be possible if all of the receivers were on their hooks, this is very desirable in party lines, but is just the reverse of what takes place on the present'party bridging system, as most operators know. The talking instruments are otherwise the same in this as in Fig. 1 in operation and effectiveness.

It will be seen that this invention is not restricted to any particular kind of line circuits.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is-

1. In a telephone system comprising a plurality of stations the combination of the usual bridging telephone with two line circuits therebetween, the signaling instruments of each station being a magneto and bell connected in the same order and relation toone another as they are in the usual bridging system of only one line circuit to one of the line circuits, and the talking instruments of each station being a transmitter, induction coil, local battery, hook switch, and a receiver connected in the same order and relation to one another as they are in the usual bridging system of only one line circuit to the other line circuit substantially as described.

2. In a telephone system comprising a plurality of site.- tions the combination of the usual series telephone with two line circuits therebetween, the signaling instruments of each station being a magneto and bell connected in the same order and relation to one another as they are in the usual series system of only one line wire in one of the line circuits, and the talking instruments of each station being a transmitter, induction coil, local battery, hook switch, and a receiver connected in the same order and relation to one another as they are in the usual bridging system of only one line circuit to the other line circuit, substantially as described.

In a telephone system the combination of the usual bridging telephone parts with two line circuits, the signaling instruments being a magneto'and bell, connected in the same order and relation to one of the line circuits as they are in the usual bridging system of only one line circuit, and the talking instruments being a transmitter, induction coil, local battery, hook switch, and a receiver connected in the same order and relation to one another as they are in the usual bridging system of only .one line circuit to the other line circuit, substantially as shown.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY F. JOECKEL.

Witnesses:

G. W. SARGENT, W. 0. SMITH. 

